Insulator mounting



`Tune 2, l1925.

E. O. SESSIONS INSULATOR MOUNTING Filed June 15, 1919 lrrl. IlllilllltrnEdam $655* Patented Jun.; 2, 192s.

UNITED STATES PATENT OFFICE.

EDSON O. SESSIONS, 0F CHICAGO, ILLINOIS, ASSIGNOR TO ALBERT C. BELL,TRUSTEE, 0F CHICAGO, ILLINOIS.

INSULATOR MOUNTING.

Application led June 13, 1919. Serial No. 304,022.

To all whom it may concern:

Be it known that I, EDsoN O. SESSIONS, a citizen of the United States,residing at Chicago, inthe county of Cook and State of Illinois, haveinvented a certain new and useful Improvement in Insulator Mountings, ofwhich the following is a specification.

My invention relates to an improved form of insulator mounting by whichseveral insulators may be secured together in a simple manner and at thesame time positively, as for example, where it is desired to make use ofa plurality of insulators to constitute a combined insulating unit or Iwhere it is desired to secure mounting bases to insulators, since myimproved construction is readily applicable to either purpose. It is anobject of my invention to produce a construction of the kind referred tosuch that the parts engaging the insulators may readily adapt themselvesto any irregularities in the surface of the insulators incident to theirmanufacture, and-yet firmly engage the insulators so that by the use ofthe device an insulator may be secured firmly to an adjacent insulatoror to amounting plate as desired. Another object of my invention is toprovide an insulator mounting of the kind referred to, which shall beeasily and inexpensively manufactured.

My invention will best be understood by reference to the accompanyingdrawings, showing preferred embodiments thereof in which Fig. 1 showsone form of the mounting devices in sectional view connecting iwo ad*jacent insulators.

Fig. 2 shows in a developed plan view the connecting device employed inFig. 1.

Fig. 3 illustrates the device shown in Fig. 2, bent into circularconformation which is ythe position it assumes when placed on aninsulator.

Fig. 4 shows in a view similar to Fig. 1 a modified construction of themounting device.

Fig. 5 shows in a view similar to Fig. 3 one of the annular tubesemployed as a part of the device shown in Fig. 4.

Fig. shown in Fig.7shows in side elevation aconnecting tube employed asa part of the device shown r in Fig..4.

6 is a sectional view of the tube, Fig. 5, taken along the line 6-6."

Fig. 8 shows in a view similar to Fig. 4, a modified construction of thedevice shown in Fig.` 4, to adapt said device to the securing of aninsulator to a mounting plate, instead of connecting two insulatorstogether.

Fig. 9 -shows in a view similar to Fig. 4 a second modified form ofmounting device, the difference being that the annular tubes shown inFig. 4 are replaced by ring sections of solid material held in place bysetcrgews :extending through the connecting Fig. 10 shows in a viewsimilar to Fig. 8 the connecting devices of Fig. 9 modified to secure aninsulator to a mounting plate instead of connecting two insulatorstogether, as shown in Fig. 9.

Fig. 11 shows in a view similar to Fig. 9 afurther modified form of mymounting devlce for securing a mounting plate to an insulator by meansof a short tube which is forced into an engaging position by compressingsaid tube.

Fig. 12 shows in said elevation a connecting tube employed in theconstruction shown in Fig. 11 before said tube is compressed.

Fig. 13 shows in cross section the mounting plate shown in Fig. 11before being secured to the insulator by the connecting tube shown inFig. 12.

Similar numerals refer to Asimilar parts throughout the several views.

In the construction shown in Figs. 1, 2 and 3, the connecting devicesemployed consistof a strip of sheet metal 15, which as shown in Fig. 2has its opposite longitudinal edges rolled over upon the body portion ofthe strip to lorm edge beads 16, which may be elliptical or circular incross section before the device is put in place on the insulator orinsulators, these beads extending nearly the entire lengthof the strip15, and being cut away at one end of the strip as indicated at 17, sothat when the strip is formed to surround the bosses or of theinsulators 19 to be connected together by the device, the end 17 of thestrip 15 overlaps the other end of the strip in which position it issecurely held with the beads 16 in the grooves of the insulatorsadjacent 1 the heads 18 in slightly compressed condition, by weldingelectrically or otherwise connecting the end 17 to the other end of thestrip l5.

As a result of this construction the formed heads 18 10 CTI strip havingits ends secured together as described, securely engages the head ofeach insulator and the shape of the beads 16 and the spring action ofthe sheet meta-l of which the strip 15 is formed, permit the beads toyield and conform to the exact shape of the surfaces of the insulatorsengaged by them, whether said engaged surfaces are regular or irregular.

In this manner a series of insulators may be secured togethermechanically in a rigid and efiicient manner for whatever purposedesired, as for example, for constructing a post insulator consistingofa pluralityv of individual insulators, for forming a connected seriesof suspension insulators, or for any other purpose for which it isdesired to connect the plurality of insulators to form a singleinsulating unit. lt will be observed that one of the beads 16 may beomitted if desired, and replaced by a mounting plate, secured in anydesired manner to the strip 15 either before or after placing the stripon an insulator, so that by this modified construction any `desireddevices may be securely held in place by the mountingv plate on theinsulator. This modified construction is not shown in the drawings asthe relation between the mounting plate and the strip 15 is of the samenature as that shown and described inconnection with Fig. 8 below.

In the construction shown in Fig. 4 the strip 15 is tubular in form andpreferably without a longitudinal joint or seam, being of just the rightinternal diameter to compress the annular tubes 16a in place in thegrooves adjacent to the heads of the insulators 19, when the parts areplaced in the connecting position shown in Fig. 4. Each annular tube 16ais formed of a cross section as indicated in Fig. 6, which may becircular or elliptical, and when the connecting tube 15a is forced tothe position shown in Fig. 4, over the annular tubes 16a. the latter areflattened somewhat and. forced positively into engagement with theadjacent surfaces of the insulation 19, whether said surfaces areregular or irregular. The connecting tube 15a as shown in Fig. 7 isprovided along each end with a series of apertures 20, extending throughit, which apertures are in line with the annular tubes 16l when themounting devices are in connecting position as shown in Fig. 4, and theparts are preferably held in connecting position by electrically weldingthem together through the apertures20, or other suitable means.

In the modified construction shown in Fig. 8. the tube 1bb is somewhatshorter than the tube 15 but of the same general construction, and whenin place on the insulator 19h, is secured to the annular tube 16b in themanner above described. for the construction shown in Fig. 4. In thisconstruction'the second annular tube 16a is replaced by a mounting plate21, which may be secured to the tube 15b in any suitable manner, as bywelding or brazing, either before or after the tube lbis placed upon theinsulator 19,

or if preferred, the mounting plate v21 may be an integral part of thetube 15b.

In the modified construction shown in Fig. 9, the same general result issecured as with the construction of Fig. L1, but in this case theconnecting tube 15a is replaced by a connecting tube 15, provided ateither end with a plurality of set-screws 22 for engaging the ringsections 16, which may be of metal and of a semi-circular orsemi-elliptical cross section to lit the grooves adjacent the heads ofthe insulator 19C, the outer snrfaces of the ring sections 16 being ofconical conformation to prevent the set-screws slipping from the ringsection when forces are applied to the insulators tending to sepa `atethem. The ring sections may be made in halves or other parts of circlesto facilitate placing the sections in positionv in the insulator. In themodified construction shown in Fig. 10 the connecting tube 15d issimilar to the connecting tube 15c shown in Fig. 9, and provided with aseries of set-screws 22n for securing the connecting tube to aninsulator in the saine manner described in connection with Fig. 9, andin lthis modified construction the other seriesof set-screws and theother ring sections employed in Fie. 9 are replaced by a mounting plate23 which, as indicated, may be integral with the connecting ring 15d, sothat any desired devices may be supported upon the mounting plate,

and secured to the supporting insulator not of said tube is made'inexpanded conforma-j tion, so that the inturned flange 27 may be slippedover the head of theinsulator and over the ring sections 16, and whenthe connecting tube 1s in a position bringing the flange 24 firmly intoengagement with the edge of the. mounting plate4 25. the expandedportion of the connecting1 tube is compressed by suitable tools,bringing the cut or slit 26 together. in which position it may be heldby welding electrically, by brazing or any equivalent means.

If dcsired, th'e mounting plate 25 may be constructed as lshown in Fig.13, so that its edge portion 28 extends away from the in ner surfaceofthemounting. plate, so-that said edg'eportion is s rung into the planeofI the inner surface -o the mounting plate, when the connecti tube 15is forced to Ithe position shown m Fig. 11y to engage the rin sections16, For this arrangement the lspring action for the edge portion of vthemounting plate materially assists inri idly securing .the mounting plateto the insu ator i tunity for slight irre larities'in the dimenl v platetoman insulator, and that ifi-either case,

in desirable position and allowsan opporsions and conformatlonof thehead of the insulator 19e without interfering with the effectiveness ofthe mounting device.

From the above it will a i pear that by my invention I have provide amounting device which may -be cheaply constructed',

which may be employed tosecure a plurality i of insulator units togetherto form a composlte lnsulator, or to secure a mounting the sire arts areositivelyheld together in de'- relation y the mounting device with outdanger of injury to the insulator, andV -without the use of cement.

Vhile 'I have shown my invention in the particular embodimentsv abovedescribed, I do not, however, limit-myself to these exact constructions,as'I may employ equivalents thereof, known to the art at the time of thefiling of this lapplication without departing from the scope of theappended claims.

What I claim is:

A v1. In an insulator mounting, the combination of a connecting tubefor-enclosing the vhead of an insulator, and an'annular member,connected with said tube and projecting inwardly from said tube toenter an annular -groove adjacent the head of said'insulator,

said tube being rigid adjacent said annular member, and said annularmember being of metal tending to assume a, conformation of 5 smallerdiameter than the diameter ofsaid groove and comprisingl an inturnedbead formed on one end of said connectmg tube..

Q. In an insulator mounting, ythe combination of a connecting tube 'forenclosing the smaller diameter than the diameter of said groove andcomprisingV an inturned bead 'formed on one end of said tube and vsaidconnecting tube comprising astrip of metal bent into tubular. form withits ends secured together.I .l

3. An insulator mounting-comprisin an annular tube of sheet springmaterial aving when unrestrained 'an inner diameter smaller than thediameter of an insulator groove tobe engaged thereby, and a metallsleeve carrying said tube at its end portion and preventing expansionof the puter wall of ,said tube, said tube having a free edge tobecontained in said insulator groove per- `mitting expansion of theinner wall of said tube.

. 4. An insulator mounting' comprising a metal sleeve vfor encirclingthev head of an insulatory having a head and an adjacent groove, and aninwardly extending tubular member at the end of sald sleeve and carried.thereby and having a semi-circular cross section on its inner surfacefor engaging the 5 groove of the insulator and a flattened outer surfaceat its juncture with said sleeve, said sleeve lcomprising a strip ofmetal bent into tubular form with its ends secured together.

5. An Iinsulator mounting comprising a' vmetal sleeve for encircling thehead of an a head and an adjacent a5 insulator having groove, and aninwardly extending tubular member 'at the end of Vsald sleeve andcarried thereby and having a semi-circular cross-sec- 'tionI on yitslinner surface for engaging the groove of the insulator and a flattenedouter surface at its juncture with said sleeve, said tubular member-bein discontinuous 'to permitit to yield, radial y of said sleeve.

6. An insulator mounting comprisingv a metal sleeve for encircling thehead of an .insulator having a vhead and an adjacent groove, and aninwardly extending tubular member at the end of said sleeve and carriedthereby and having a semi-circular;r

cross-section on its inner surface for engag ing the groove of theinsulator-and a flat- .tened outer surface at its juncture with saidsleeve.

In wltness whereof, I have hereunto sub- .'scribed my .name this 3rd dayof June, A. D.,

nDsoN o. sessions.

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